I use two 1/2" breaker bars on the hitch head bolts, one on the bolt head side and one on the nut/lock-washer side and tighten as best I can. In the 7 years we've been using our Sway-Pro, I've probably changed the hitch head height half-a-dozen times and I've never had any issues with the bolts coming loose after moving the hitch head.
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2016 Winnebago Micro Minnie 2106DS, 200Ah BB, 400w rooftop & 500w front cap solar
2020 Tundra SR5 DLCB TRD Off Road, 5.7L V8 w/6.5' bed & 38 gal. tank, 4.30 axle ratio
Blue Ox Sway Pro w/750# bars, wired RVS rear view camera, Renogy 20A DC/DC charger
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